JavaScript Free

In my add-on I have an HTML page that gets displayed upon install/update. Firefox obviously shows t… Read more Hide Location Bar From Firefox Add-on

So I've read just about everything I could find on MDN, stackoverflow, etc, and it all seems to… Read more Automatically Install Toolbarbutton To Firefox Nav-bar, Not Working With Insertitem

Once, I tried adding a button with 'bookmark-item pagerank' as class to PersonalToolbar. No… Read more I Try To Add A New Button To Firefox, But It's The Old Button That Gets Added!

hi im pretty much a beginner.I need some help turning this script in an browser extension for firef… Read more Convert Javascript Into Firefox Extension

I am writing what should be a fairly straightforward firefox extension. But this is my first firef… Read more How Does Javascript Execution Context Work In Firefox Extensions With Multiple Windows?

I want to write a Firefox extension, with copy to clipboard and execute an external program with se… Read more Copy To Clipboard In Firefox Extension Not Working

I am building a Firefox add-on using the addon-sdk. The add-on has one button that displays a panel… Read more Why Is My Add-on Panel´s Content Script No Longer Responding To Port Messages After Changing Contenturl?

I have a simple extension where I use Cu.import to import a JavaScript code module. But, when I loa… Read more Unable To Use Components In Webextensions: Get "referenceerror: Cu Is Not Defined"